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https://github.com/daniel-lynch/ovrplugin-openxr-shim.git
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Daniel LynchandClaude Opus 4.8
a72a79ad29
An independent reimplementation of Meta's libOVRPlugin ABI on top of OpenXR, so VrApi-era Meta Quest VR titles can run on non-Meta OpenXR runtimes (Monado, Steam Frame) instead of being locked to Meta hardware. Original code only — no Meta/Epic/Capcom binaries, headers, or assets. Includes a desktop harness that drives the shim against Monado headless. Scope/legal: interoperability; entitlement handling is out of scope. See README for the legal/scope section and docs/ for the research trail and design notes. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01D6sFYGXZPsq3v7xtcDES6g
53 lines
2.1 KiB
C
53 lines
2.1 KiB
C
/* harness.c — drives the ovrp_* sequence against a real OpenXR runtime
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* (Path B: Monado simulated/headless). Smoke-tests the shim's OpenXR usage
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* without RE4 or a headset. See ../../TESTING.md.
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*
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* Build (inside a Linux env with an OpenXR loader):
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* cc -std=c11 -I../include -I../third_party/openxr harness.c \
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* ../src/stubs.c ../src/core.c ../src/xr_runtime.c ../src/vk_session.c \
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* ../src/layers.c -lopenxr_loader -o harness
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* XR_RUNTIME_JSON=/path/openxr_monado-dev.json ./harness
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*
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* NOTE: Initialize5 -> xrCreateSession needs real Vulkan handles. For a first
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* smoke test we stop after PreInitialize3 (instance+system create) unless real
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* VkInstance/Device handles are provided. Set WITH_VK=1 + fill the handles to go
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* further once a headless Vulkan device is available.
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*/
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#include "ovrplugin_shim.h"
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#include <stdio.h>
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#define CHECK(expr) do { \
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ovrpResult _r = (expr); \
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printf(" %-34s -> %d %s\n", #expr, _r, OVRP_SUCCESS(_r) ? "OK" : "(fail)"); \
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} while (0)
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int main(void) {
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printf("== ovrp shim smoke test ==\n");
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printf("[lifecycle]\n");
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CHECK(ovrp_PreInitialize3(NULL)); /* xrCreateInstance + xrGetSystem */
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/* Session creation needs real Vulkan handles; pass NULLs and expect failure
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* until a headless Vulkan device is wired (see TESTING.md Path B note). */
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printf("[init — expect fail without Vulkan handles]\n");
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CHECK(ovrp_Initialize5(ovrpRenderAPI_Vulkan, NULL, NULL, NULL,
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NULL, NULL, NULL, 0, 0));
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printf("[frame loop — will report not-ready until session exists]\n");
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for (int f = 0; f < 3; f++) {
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ovrp_Update3(ovrpStep_Render, f, 0.0);
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ovrp_WaitToBeginFrame(f);
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ovrp_BeginFrame4(f, NULL);
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ovrpPoseStatef head;
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ovrp_GetNodePoseState3(ovrpStep_Render, f, ovrpNode_Head, &head);
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double t = 0; ovrp_GetPredictedDisplayTime(f, &t);
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ovrp_EndFrame4(f, NULL, 0, NULL);
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printf(" frame %d: head.w=%.3f t=%.6f\n", f, head.Pose.Orientation.w, t);
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}
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printf("[shutdown]\n");
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CHECK(ovrp_Shutdown2());
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printf("== done ==\n");
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return 0;
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}
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